Exercise in the heat

Question 1

Explain the term ‘Cardiovascular Drift’

Answer 1

-It is an upward drift of Heart Rate during sustained
exercise – caused by increased core body temperature
-Sweating/Loss of fluids causes reduction in blood volume
(blood more viscous)
-Leading to a decrease in Venous Return
-Leading to a decrease in Stroke Volume
-Leading to HR increasing to compensate for decreased SV